NUMBER:

08-054-22 REV. A

GROUP:

08 - Electrical

DATE:

May 13, 2022

This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.

This bulletin supersedes Technical Service Bulletin (TSB) 08-054-22, date of issue March 12,
2022, which should be removed from your files. All revisions are highlighted with
**asterisks** and include an additional warning, step and LOP.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update
(RSU) 21-123, date of issue August 26, 2021. All applicable Sold and Un-Sold RSU VINs have
been loaded. To verify this RSU service action is applicable to the vehicle, use VIP or
perform a VIN search in DealerCONNECT/Service Library. All repairs are reimbursable within
the provisions of warranty. This RSU will expire 18 months after the date of issue.
SUBJECT:
Flash: Battery Pack Control Module (BPCM) Diagnostic and System Updates
OVERVIEW:
This bulletin involves updating the BPCM with the latest available software.
MODELS:
2021

(JL)

Jeep Wrangler

NOTE: This bulletin applies to vehicles within the following markets/countries: North
America, APAC and EMEA.
NOTE: This bulletin applies to vehicles equipped with the 2.0L I4 DOHC DI Turbo PHEV
Engine (Sales Code ECX).
SYMPTOM/CONDITION:
Customers may experience a false Malfunction Indicator Lamp (MIL) illumination related to PHEV
battery:
•
•
•
•
•
•
•
•
•
•

P1C00-00 - Hybrid/EV Battery Voltage Sense 1 Out Of Range Low.
P1C01-00 - Hybrid/EV Battery Voltage Sense 1 Out Of Range High.
P1A9B-00 - Hybrid/EV Battery Temperature Sensor 1 Out Of Range High.
P0BBD-00 - Hybrid Battery Pack Voltage Variation Exceeded Limit.
P167B-00 - Controlled System Shutdown.
U1885-00 - Battery Energy Control Module Lost Communication With HCP.
P0EDD-00 - Hybrid/EV Battery Pack B Deterioration.
U0111 - Lost Communication With Hybrid Battery Pack Sensor Module.
P0CA7-00 - Hybrid/EV Battery Discharging Current High.
P1A0C-00 - Battery Energy Control Module System Voltage Low.

This software enhancement will improve PHEV battery performance and diagnostics.

08-054-22 REV. A

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NOTE: Additional module flashes are required for this update to be effective, the following
modules are all to be updated along with this BPCM update:
• Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known
as the Power Invertor Module (PIM).
• Transmission Control Module (TCM).
• Powertrain Control Module (PCM).
• Integrated Dual Charging Module (IDCM).
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
DealerCONNECT/Service Library, verify all related systems are functioning as designed. If
Diagnostic Trouble Codes (DTCs) or symptom conditions, other than the ones listed above are
present, record the issues on the repair order and repair as necessary before proceeding further
with this bulletin.
If a customer’s VIN is listed in VIP or your RSU VIN list, perform the repair. If any vehicle not on the
VIN list exhibits the symptom/condition or DTC, perform the repair.
REPAIR PROCEDURE:
NOTE: The HCP, AHCP, TCM, PCM and IDCM must be updated to the latest available
software at the conclusion of this repair procedure. Refer to all applicable
published technical service bulletins for detailed repair procedures and labor times
regarding updating the HCP, AHCP, TCM, PCM and IDCM software.
NOTE: Install a battery charger to maintain a 12 volt system voltage.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
WARNING!
• **Before performing the software reprogramming, it is necessary to make the vehicle
safe.
• When performing repairs that directly involve or imply possible contact with live high
voltage components/systems, the technician must ensure that the power supply of the
high-voltage system is disconnected throughout the operation.
• Only specifically trained technicians qualified to perform repairs on vehicles with high
voltage systems under current national laws/regulations are authorized to work on the
vehicle.
• Before performing any diagnostic repair work on the vehicle, carefully read and comply
with the general instructions for working safely on hybrid/electric vehicles and use
suitable general equipment and Personal Protective Equipment (PPE).**
1. Is the vehicle on the RSU VIN list?
• YES>>> Proceed to Step 2.
• NO>>> Proceed to Step 3.
2. Does the BPCM have the latest software already installed?
• YES>>> This bulletin has been completed, use inspect LOP (18-19-87-9K) to close the
active RSU.
• NO>>> Proceed to Step 3.
3. **Perform the vehicle “High-Voltage Power Down” procedure. Refer to the detailed service
procedures available in DealerCONNECT/Service Library under: Service Info> 08 –Electrical/
Standard Procedure/High-Voltage Power Down.
4. Reconnect the 12 volt battery.**

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08-054-22 REV. A

5. Reprogram the BPCM with the latest software. Detailed instructions for flashing control modules
using the wiTECH Diagnostic Application are available by selecting the application’s “HELP”
tab.
6. Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH
application will automatically present all DTCs after the flash and allow them to be cleared.
7. Verify the HCP, AHCP, TCM, PCM and IDCM are also programmed with the latest available
software. Refer to all applicable published service bulletins for detailed repair procedures and
labor times regarding updating the HCP, AHCP, TCM, PCM and IDCM software.
8. **Perform the vehicle “High-Voltage Power Up” procedure. Refer to the detailed service
procedures available in DealerCONNECT/Service Library under: Service Info>08 Electrical /Standard Procedure> 08 – Electrical/Standard Procedure/High-Voltage Power Up.**
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No:

Description

Skill Category

Amount

18-19-87-9K

Battery Pack Control Module
(BPCM), Inspect
(0 - Introduction)
Battery Pack Control Module
(BPCM), Inspect and Reprogram
(0 - Introduction)

6 - Electrical and
Body Systems

0.2 Hrs.

6 - Electrical and
Body Systems

0.3 Hrs.

18-19-87-9M

NOTE: The expected completion time for the flash download portion of this procedure is
approximately 6 minutes. Actual flash download times may be affected by vehicle
connection and network capabilities.
RELATED TIME ALLOWANCE:
Labor Operation No:
**08-08-11-50

Description
Skill Category
High Voltage Power Down and 6 - Electrical and
Body Systems
UP Procedures
(0 - Introduction)

Amount
0.7 Hrs.

NOTE: The related LOP for high voltage power down and up can only be claimed one time
per updating these additional modules:
• Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known
as the Power Invertor Module (PIM).
• Transmission Control Module (TCM).
• Powertrain Control Module (PCM).
• Integrated Dual Charging Module (IDCM).**

08-054-22 REV. A

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FAILURE CODE:
The dealer must choose which failure code to use depending on if this is a Rapid Service
Update (RSU) or Technical Service Bulletin.
• The “RF” failure code is required for essential module flash/reprogramming and can only be
used after confirmation that the VIN is included on the RSU.
• The failure code “RF” (Required Flash) can no longer be used on Technical Service Bulletin
flashes. The “RF” failure code must be used on an RSU.
• If the customer’s concern matches the SYMPTOM/CONDITION identified in the Technical
Service Bulletin, failure code CC is to be used. When utilizing this failure code, the 3C’s must
be supplied.
RF

Required Flash - RSU

CC

Customer Concern